// Copied from the Public Domain C Library (PDCLib). r519
#include <string.h>

int memcmp( const void * s1, const void * s2, size_t n )
{
    const unsigned char * p1 = (const unsigned char *) s1;
    const unsigned char * p2 = (const unsigned char *) s2;
    while ( n-- )
    {
        if ( *p1 != *p2 )
        {
            return *p1 - *p2;
        }
        ++p1;
        ++p2;
    }
    return 0;
}
